Strip compound planting technology of corn and soybean

The strip compound planting technology of corn and soybean is a green and efficient planting technology developed on the basis of traditional intercropping.

Corn-soybean strip compound planting technology model gives full play to the edge advantage of high-position crop corn and expands the light receiving space of low-position crop soybean. Soybean belt and corn belt can be rotated in the field across the year, which is suitable for mechanized operations such as machine sowing, machine management and machine harvesting. Soybean and corn in the same plot can grow harmoniously, with a double harvest in one season, achieving the production goal of stabilizing corn and increasing soybean.

This technology was clearly put forward in the No.1 Document of the Central Committee this year, and it is the key demonstration and promotion project of stabilizing grain and expanding oil in the country this year. This year, the Ministry of Agriculture and Rural Affairs promoted the corn-soybean compound planting model in 16 provinces across the country, covering an area of over150,000 mu. In the northeast, yellow and other regions, the rotation of grain and beans will be implemented, and the strip compound planting of corn and soybean will be promoted in the northwest, yellow, southwest and the middle and lower reaches of the Yangtze River.

Technical principle of strip compound planting of corn and soybean

Corn-soybean belt compound planting technology mainly uses the genetic and biological differences between soybean and corn in shade tolerance and density tolerance to realize intercropping between two rows of corn and two rows of soybean belts, which improves the utilization rate of light energy, nutrients and water.

High-yield varieties with shade tolerance, density tolerance, lodging resistance and suitable for mechanical harvesting are selected for soybeans, and high-yield varieties with density tolerance, compact or semi-compact plant type and suitable for mechanical harvesting are selected for corn. Adopt wide and narrow row planting to expand the distance between corn and soybean; Reduce the spacing between soybean and corn; Do a good job in enclosure and weeding before seedling, dry seed dressing with uniconazole, fertilizer adjustment, vigorous control, disease control and insect control.